Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 214-333-6 | CAS number: 1121-60-4
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- activated sludge respiration inhibition testing
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Reason / purpose for cross-reference:
- reference to other study
Reference
Description of key information
According to the ECHA Guidance document R7b, no further test on the toxicity to microorganisms has to be conducted if the toxicity control in a ready biodegradability test shows no inhibitory effects on microorganisms. Examination of the degradation curve for the toxicity control of the Key Study (OECD 301D, Report no.: 721/066) showed that the toxicity control attained 25% degradation by Day 14 thereby confirming that the test material was not toxic to the sludge. After 28 days the toxicity control had attained 75% degradation. The concentration of 2 mg/L used in the toxicity control can be used as NOEC value for toxicity to microorganisms.
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 2 mg/L
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
